Analysis of the Thermal Characteristics of Electro-Hydrostatic Actuators*

Aiming to investigate the thermal characteristics of the core hydraulic components during the operation of Electro-Hydrostatic Actuator (EHA), the thermodynamic model of the hydraulic system of EHA is established by the aggregate parameter method, and the temperature rise of the core hydraulic components and the load pipeline under different external load forces and ambient temperature is analyzed based on the AMESim simulation platform. The results show that the temperature rise of the core hydraulic components and load line of the EHA is positively related to the magnitude of the external load force, and the influence of the external ambient temperature on the temperature rise depends on the operation time, which provides a reference for the design of the EHA from the perspective of thermal management.